Start with the mission geometry.
A headline range figure cannot describe a moving link. Platform altitude, antenna placement, orientation, terrain and the ground segment all influence the usable connection. Engineering begins by modelling that geometry, then testing the complete configuration against the mission profile.
This changes the question from “How far can the radio transmit?” to “What information must arrive, with what confidence, throughout the mission?”
Design the stack as one system.
RF performance, adaptive modulation, routing and traffic priority are tightly connected. A resilient design allows these layers to respond coherently as conditions change instead of optimizing each component in isolation.
Clear platform interfaces are equally important. Video, command and telemetry have different latency and continuity needs, so the integration architecture must preserve their priorities from payload to operator.
Prove the configuration, not the brochure.
Public specifications are useful for initial comparison. Programme decisions require representative antennas, installation constraints, channel planning and staged testing. Evidence built around the actual configuration is what turns a capable radio into a dependable mission system.